diff --git a/Makefile.in b/Makefile.in
index a59ff4b..b3f9540 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -277,7 +277,7 @@
 	fi
 
 commentcheck:
-	grep -n // `find $(srcdir) -name \*.\[ch\]` | grep -v http | grep -v /win32/
+	grep -n // `find $(srcdir) -name \*.\[ch\]` | grep -v tp:// | grep -v /win32/
 
 dist: version tag tar